The main forms of Poker are Draw Poker and Stud Poker. In Draw Poker, all the cards are dealt face down to the players. In Stud Poker, some of the cards are dealt face up as the betting progresses, so that all of the other players get to see a part of each player's hands.
A phylogenetic tree or evolutionary tree is a branching diagram or  tree  showing the inferred evolutionary relationships among various biological species or other entitiesâtheir phylogeny âbased upon similarities and differences in their physical or genetic characteristics.
Phylogenetic systematics, a.k.a. evolutionary trees : Cladistics is a method of hypothesizing relationships among organisms â in other words, a method of reconstructing evolutionary trees. The basis of a cladistic analysis is data on the characters, or traits, of the organisms in which we are interested. These characters could be anatomical and physiological characteristics, behaviors, or genetic sequences. The result of a cladistic analysis is a tree, which represents a supported hypothesis about the relationships among the organisms.